CN109852216B - Water-based metal flashing paint - Google Patents
Water-based metal flashing paint Download PDFInfo
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- CN109852216B CN109852216B CN201811524129.7A CN201811524129A CN109852216B CN 109852216 B CN109852216 B CN 109852216B CN 201811524129 A CN201811524129 A CN 201811524129A CN 109852216 B CN109852216 B CN 109852216B
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Abstract
The invention relates to a metallic flashing paint, is suitable for the coating paint enterprise, it discloses a water metallic flashing paint and supporting concocting the resin; the water-based metallic flashing paint comprises the following raw materials in parts by weight: 3-20 parts of aluminum paste, 3-20 parts of film-forming cosolvent, 0.1-1 part of high-molecular-weight dispersant, 0.1-3 parts of amine neutralizer, 0.5-3 parts of metal flashing paint arrangement agent, 50-80 parts of self-made waterborne polyurethane base material and 5-30 parts of deionized water. The matched blended resin comprises the following raw materials in parts by weight: 30-70 parts of water-based acrylic resin, 0.1-3 parts of amine neutralizer, 0.1-1 part of defoaming agent, 0.1-1 part of wetting agent, 30-60 parts of self-made powder metal flashing paint arrangement agent aqueous solution and 3-20 parts of deionized water. The product of the invention has good storage stability, the content of organic volatile compounds (VOC) can be controlled below 100g/L, the drying speed of a paint film obtained by matching the water-based metallic flashing paint and the blended resin is high, the paint film has consistent hue with the water-based metallic flashing paint, no color difference exists, the arrangement effect of the metallic flashing paint is good, and the performance is excellent.
Description
The technical field is as follows:
the invention relates to a coating paint for repairing automobiles, in particular to a water-based metal flashing coating paint.
Background art:
the Volatilization (VOC) of the solvent in the traditional solvent-based paint is the third major air pollution source following the emission of automobile exhaust and smoke, is the main source of PM2.5, and the emission of VOC can be greatly reduced by the water-based paint. With the pursuit of customers for the beautiful effect of automobile color, the usage amount of the metallic, pearlescent and other flashing paints is rapidly increased. The prepared water-based metallic flashing paint has good storage performance, good paint film arrangement effect and high drying speed, and is very favorable for the water-based popularization of automobile repair. The side surface of the metal flashing paint prepared by using the water-based acrylic resin as a main film forming substance is blue light or white light, the color difference of dry and wet films is large, the color is not easy to mix, the requirement of quick color mixing in the refinishing paint market cannot be met, but the cost is low, and the drying speed is high. The color difference of dry and wet coating films of the metal flashing paint prepared by using the waterborne polyurethane as a film forming substance is small, the influence of different spraying technologies on the color effect is small, the covering power is strong, and the coating efficiency is high. The metallic flashing paint has color-dependent property, the arrangement of paint films is very important for the color and the flashing effect, but when different metallic flashing paint arranging agents are added, a large amount of solvent is needed, or the storage stability of products is poor.
The invention content is as follows:
the invention aims to provide the water-based metallic flashing paint which has good storage stability, can be dried at normal temperature and dried at low temperature (50-60 ℃ for 5 min).
The technical proposal is that the water-based metallic flashing paint comprises water-based metallic flashing paint and matched blending resin. The water-based metallic flashing paint comprises the following raw materials in parts by weight:
3-20 parts of aluminum paste, 3-20 parts of film-forming cosolvent, 0.1-1 part of high-molecular-weight dispersant of polyacrylate copolymer solution, 0.1-3 parts of amine neutralizer of ammonia water, triethylamine or dimethylethanolamine, 0.5-3 parts of metal flashing paint arrangement agent of water-based EVA wax emulsion, 50-80 parts of self-made water-based polyurethane base material and 5-30 parts of deionized water. The matched blended resin comprises the following raw materials in parts by weight: 30-70 parts of water-based acrylic resin, 0.1-3 parts of amine neutralizer, 0.1-1 part of siloxane defoamer, 0.1-1 part of organic silicon surfactant wetting agent, 30-60 parts of self-made powder metal flashing paint arrangement agent aqueous solution and 3-20 parts of deionized water.
The self-made waterborne polyurethane base material comprises the following raw materials in parts by weight: 50-70 parts of waterborne polyurethane resin, 0.1-1 part of siloxane defoaming agent, 0.1-1 part of organic silicon surfactant wetting agent, 1-10 parts of anti-settling agent of polyamide sodium salt emulsion and 20-50 parts of deionized water. The preparation method comprises the following steps: adding the waterborne polyurethane resin into a container, adding a neutralizing agent in a dispersing state to adjust the pH value to 7-7.5, and dispersing for 5-10 min; and (3) sequentially adding a defoaming agent, a wetting agent, an anti-settling agent, deionized water and the like, stirring for 20-30 min, and filtering with 300-mesh filter cloth to obtain the composite.
The self-made powder metal flashing paint arrangement agent aqueous solution comprises the following raw materials in parts by weight: 70-95 parts of deionized water, 1-20 parts of powder metal flashing paint arrangement agent, 2-20 parts of polyol which is medium-low molecular weight polyethylene glycol, polypropylene glycol or polyoxyethylene-propylene oxide glycol, and 0.1-2 parts of emulsifier. The preparation method comprises the following steps: adding the powdery metal flashing paint arraying agent into deionized water in a dispersed state, dispersing for 15-20 min until the powdery metal flashing paint arraying agent is fully dissolved, adding polyol, dispersing for 3-5 min, adding the substituted alkylphenol environment-friendly emulsifier, and dispersing for 10-20 min.
The preparation method of the water-based metallic flashing paint comprises the following steps: soaking the metal flashing paint in part of cosolvent for 1-2 h, adding the metal flashing paint into the self-made water-based polyurethane base material in a dispersed state, cleaning the metal flashing paint with the rest cosolvent, and dispersing for 5-10 min. And (3) sequentially adding a defoaming agent, a wetting agent and deionized water, adding a part of neutralizing agent to adjust the pH to about 7.5, and dispersing for 5-10 min. Adding a self-made metal flashing paint arrangement agent aqueous solution, dispersing for 3-5 min, and adding the rest neutralizing agent to adjust the pH value to 8.5-9.
The preparation of the matched blended resin comprises the following steps: adding the water-based acrylic resin into a container, adding a neutralizing agent to adjust the pH value to 7-7.5 in a dispersion state, and dispersing for 5-10 min; adding a defoaming agent, a wetting agent and deionized water in sequence, and dispersing for 2-3 min; adding the prepared powder metal flashing paint arrangement agent water solution, dispersing for 5-8 min, and filtering with 300-mesh filter cloth.
The film forming cosolvent comprises one or more of ethylene glycol tertiary butyl ether, polyol ester, isopropanol and ethylene glycol tertiary butyl ether acetate; the high molecular weight dispersant is polyacrylate copolymer solution; the wetting agent is an organic silicon surfactant; the defoaming agent is siloxane defoaming agent; the neutralizing agent comprises one or more of ammonia water, triethylamine or dimethylethanolamine; the metal flash arrangement agent is water-based EVA wax emulsion; the powder metal flashing paint aligning agent is BYK layered silicate (BYK Laponite RD), and the polyol is one or more of polyethylene glycol, polypropylene glycol and polyoxyethylene-propylene oxide glycol with medium and low molecular weight; the emulsifier is an environment-friendly emulsifier replacing alkylphenol, and the anti-settling agent is aqueous polyamide sodium salt emulsion.
In the invention, the water-based metallic flashing paint and the blended resin need to be matched for use. The arrangement agent in the metallic flashing paint and the self-made powder metallic flashing paint arrangement agent in the blending resin act together, so that an excellent metallic flashing paint film arrangement effect is obtained, but when the two metallic flashing paint arrangement agents are added into the metallic flashing paint at the same time, the metallic flashing paint turns thick within one month, and the storage stability is poor. The color difference of dry and wet coating films of the metal flashing paint prepared by using the waterborne polyurethane as a film forming substance is small, the influence of different spraying technologies on the color effect is small, the covering power is strong, and the coating efficiency is high. When the water-based acrylic resin is used as a main film forming substance for preparing the metal flashing paint, the side surface of the prepared metal flashing paint is blue or white, the color difference of a dry film and a wet film is large, the color is not easy to be mixed, and the requirement of quick color mixing in the refinishing paint market cannot be met, but the water-based acrylic resin has the advantages of low cost and high drying speed. The matched water-based acrylic acid blended resin is prepared and added during spraying, and the sprayed paint film is consistent in hue with the metallic flashing paint before the matched blended resin is not added, has no chromatic aberration, is beneficial to improving the drying speed of the metallic flashing paint film, avoids large color difference of a dry paint film and a wet paint film during color matching, and meets the requirement of quick color matching. The key to the aqueous blended resin of the present invention is the addition of a polyol and an emulsifier, which maintains the excellent storage stability of the blended resin. The content of Volatile Organic Compounds (VOC) can be controlled below 100g/L, the storage stability is good, the arrangement effect of the metallic flashing paint is good, and the paint film performance is excellent.
The specific implementation mode is as follows:
example 1
1 preparation of aqueous metallic flashing paints
(1) Preparing a water-based polyurethane base material, which comprises the following raw materials in parts by weight: 60 parts of waterborne polyurethane resin, 0.1 part of siloxane defoaming agent, 0.15 part of organosilicon surfactant wetting agent, 3 parts of waterborne polyamide sodium salt emulsion anti-settling agent and 36.75 parts of deionized water. The preparation method comprises the following steps: adding the waterborne polyurethane resin into a container, adding a dimethylethanolamine neutralizer to adjust the pH value to 7-7.5 in a dispersed state, and dispersing for 5-10 min; sequentially adding a siloxane defoaming agent, an organic silicon surfactant wetting agent, a water-based polyamide sodium salt emulsion anti-settling agent, deionized water and the like, stirring for 20-30 min, and filtering with 300-mesh filter cloth to obtain the water-based polyamide sodium salt emulsion anti-settling agent.
(2) The preparation method of the water-based metallic flashing paint comprises the following raw materials in parts by weight: aluminum paste 3, polyol ester film-forming cosolvent 3, polyacrylate copolymer solution high molecular weight dispersant 0.1, dimethylethanolamine amine neutralizer 0.1, aqueous EVA wax emulsion metal flashing paint arrangement agent 2, self-made aqueous polyurethane base material 60 and deionized water 31.8. The preparation steps are as follows: soaking aluminum paste in part of cosolvent for 1-2 h, adding the aluminum paste into a self-made waterborne polyurethane base material in a dispersed state, cleaning with the rest cosolvent, and dispersing for 5-10 min. And (3) sequentially adding a defoaming agent, a wetting agent and deionized water, adding a part of neutralizing agent to adjust the pH to about 7.5, and dispersing for 5-10 min. Adding a metal flashing paint arrangement agent, dispersing for 3-5 min, and adding the rest neutralizing agent to adjust the pH value to 8.5-9.
2 preparing the matched blended resin
(1) The preparation method of the powder metal flashing paint aligning agent aqueous solution comprises the following raw materials in parts by weight: deionized water 94, a powder metal flashing paint arrangement agent 2 of phyllosilicate, and polyhydric alcohol 3 of medium and low molecular weight polyethylene glycol, which replaces alkylphenol environment-friendly emulsifier 1. The preparation method comprises the following steps: adding the powdery metal flashing paint arraying agent into deionized water in a dispersed state, dispersing for 15-20 min until the powdery metal flashing paint arraying agent is fully dissolved, adding polyhydric alcohol of polyethylene glycol with medium and low molecular weights, dispersing for 3-5 min, adding an environment-friendly emulsifier replacing alkylphenol, and dispersing for 10-20 min.
(2) Preparing a matched blended resin, which comprises the following raw materials in parts by weight: 50 parts of water-based acrylic resin, 0.1 part of dimethyl ethanolamine neutralizer, 0.1 part of siloxane defoamer, 0.15 part of wetting agent of organic surfactant, 40 parts of self-made powder metal flashing paint arrangement agent water solution and 9.65 parts of deionized water. The preparation steps are as follows: adding the water-based acrylic resin into a container, adding a neutralizer of dimethylethanolamine to adjust the pH to 7-7.5 in a dispersed state, and dispersing for 5-10 min. And sequentially adding a siloxane defoaming agent, an organic silicon surfactant wetting agent and deionized water, and dispersing for 2-3 min. And (2) adding the self-made powder metal flashing paint arrangement agent aqueous solution prepared in the step (1), dispersing for 5-8 min, and filtering with 300-mesh filter cloth to obtain the metal flashing paint arrangement agent.
The prepared water-based metallic flashing paint and the prepared matched blended resin are mixed according to the proportion of 1: the mixture ratio of 1 is stirred evenly and then the spraying can be carried out.
The water-based metallic flashing paint and the matched blended resin paint film have the following properties:
example 2
1 preparation of aqueous metallic flashing paints
(1) Preparing a water-based polyurethane base material, which comprises the following raw materials in parts by weight: 60 parts of waterborne polyurethane resin, 0.1 part of siloxane defoaming agent, 0.15 part of organosilicon surfactant wetting agent, 3 parts of waterborne polyamide sodium salt anti-settling agent and 36.75 parts of deionized water. The preparation method comprises the following steps: adding the aqueous polyurethane resin into a container, adding triethylamine neutralizer in a dispersed state to adjust the pH value to 7-7.5, and dispersing for 5-10 min; sequentially adding a siloxane defoaming agent, an organic silicon surfactant wetting agent, an anti-settling agent of the water-based polyamide sodium salt emulsion, deionized water and the like, stirring for 20-30 min, and filtering with 300-mesh filter cloth to obtain the water-based polyamide sodium salt emulsion.
(2) The preparation method of the water-based metallic flashing paint comprises the following raw materials in parts by weight: 8 parts of aluminum paste, 5 parts of ethylene glycol tert-butyl ether, 3 parts of isopropanol as a film forming cosolvent, 0.5 part of a high molecular weight dispersant of a polyacrylate copolymer, 1.5 parts of an amine neutralizer of triethylamine, 0.5 part of a metal flashing paint arrangement agent of a waterborne EVA wax emulsion, 65 parts of self-made waterborne polyurethane base material in the step (1) and 16.5 parts of deionized water. The preparation steps are as follows: and (3) soaking aluminum paste for 1-2 h by using part of cosolvent, adding the aluminum paste into the self-made waterborne polyurethane base material obtained in the step (1) in a dispersed state, cleaning by using the rest cosolvent, and dispersing for 5-10 min. And (3) sequentially adding a defoaming agent, a wetting agent and deionized water, adding a part of neutralizing agent to adjust the pH to about 7.5, and dispersing for 5-10 min. Adding a metal flashing paint arrangement agent, dispersing for 3-5 min, and adding the rest neutralizing agent to adjust the pH value to 8.5-9.
2 preparing the matched blended resin
(1) The preparation method of the powder metal flashing paint aligning agent aqueous solution comprises the following raw materials in parts by weight: deionized water 94, a powder metal flashing paint arrangement agent 2 of phyllosilicate and a polyalcohol 3 of polypropylene glycol to replace alkylphenol environment-friendly emulsifier 1. The preparation method comprises the following steps: adding the powdery metal flashing paint arraying agent into deionized water in a dispersed state, dispersing for 15-20 min until the powdery metal flashing paint arraying agent is fully dissolved, adding the polyhydric alcohol of the polypropylene glycol, dispersing for 3-5 min, adding the substituted alkylphenol environment-friendly emulsifier, and dispersing for 10-20 min.
(2) Preparing a matched blended resin, which comprises the following raw materials in parts by weight: 25 parts of water-based acrylic resin, 1.5 parts of amine neutralizer of triethylamine, 0.5 part of siloxane defoaming agent, 1 part of wetting agent of organic silicon surfactant, 60 parts of self-made powder metal flashing paint arrangement agent aqueous solution of step (1) and 12 parts of deionized water. The preparation steps are as follows: adding the water-based acrylic resin into a container, adding a neutralizing agent of triethylamine to adjust the pH value to 7-7.5 in a dispersed state, and dispersing for 5-10 min. And (3) sequentially adding a siloxane defoaming agent, a wetting agent of an organic silicon surfactant and deionized water, and dispersing for 2-3 min. And (2) adding the powder metal flashing paint arrangement agent aqueous solution prepared in the step (1), dispersing for 5-8 min, and filtering with 300-mesh filter cloth to obtain the metal flashing paint arrangement agent.
The prepared water-based metallic flashing paint and the prepared matched blending resin are mixed according to the proportion of 1: the mixture ratio of 1 is stirred evenly and then the spraying can be carried out.
The water-based metallic flashing paint and the matched blended resin paint film have the following properties:
example 3
1 preparation of aqueous metallic flashing paints
(1) Preparing a water-based polyurethane base material, which comprises the following raw materials in parts by weight: 60 parts of water-based polyurethane resin, 0.1 part of siloxane defoaming agent, 0.15 part of wetting agent of organosilicon surfactant, 3 parts of water-based polyamide sodium salt emulsion anti-settling agent and 36.75 parts of deionized water. The preparation method comprises the following steps: adding the aqueous polyurethane resin into a container, adding a neutralizer of ammonia water in a dispersion state to adjust the pH value to 7-7.5, and dispersing for 5-10 min; sequentially adding a siloxane defoaming agent, an organic silicon surfactant wetting agent, an anti-settling agent of the water-based polyamide sodium salt emulsion, deionized water and the like, stirring for 20-30 min, and filtering with 300-mesh filter cloth to obtain the water-based polyamide sodium salt emulsion.
(2) The preparation method of the water-based metallic flashing paint comprises the following raw materials in parts by weight: aluminum paste 3, a film forming cosolvent of ethylene glycol tertiary butyl ether 20, a high molecular weight dispersant 1 of a polyacrylate copolymer solution, an amine neutralizer 1 of ammonia water, a metal flashing paint arrangement agent 3 of a waterborne EVA wax emulsion, a self-made waterborne polyurethane base material 50 in the step (1), and deionized water 22. The preparation steps are as follows: and (3) soaking aluminum paste for 1-2 h by using part of cosolvent, adding the aluminum paste into the self-made waterborne polyurethane base material obtained in the step (1) in a dispersed state, cleaning by using the rest cosolvent, and dispersing for 5-10 min. Sequentially adding a siloxane defoaming agent, an organic silicon surfactant wetting agent and deionized water, adding a part of ammonia water neutralizer to adjust the pH to about 7.5, and dispersing for 5-10 min. Adding a metal flashing paint arrangement agent of the phyllosilicate, dispersing for 3-5 min, and adding a neutralizing agent of the residual ammonia water to adjust the pH value to 8.5-9.
2 preparing the matched blended resin
(1) The preparation method of the powder metal flashing paint aligning agent aqueous solution comprises the following raw materials in parts by weight: deionized water 94, a powder metal flashing paint aligning agent 2, polyoxyethylene-polyoxypropylene glycol polyol 3 and an emulsifier 1. The preparation method comprises the following steps: adding the powdery metal flashing paint arraying agent into deionized water in a dispersed state, dispersing for 15-20 min until the powdery metal flashing paint arraying agent is fully dissolved, adding polyoxyethylene-polyoxypropylene glycol polyol, dispersing for 3-5 min, adding an alkylphenol-substituted environment-friendly emulsifier, and dispersing for 10-20 min.
(2) Preparing a matched blended resin, which comprises the following raw materials in parts by weight: 60 parts of water-based acrylic resin, 3 parts of an amine neutralizer of ammonia water, 1 part of a siloxane defoamer, 0.5 part of a wetting agent of an organic silicon surfactant, 30 parts of a self-made powder metal flashing paint arrangement agent aqueous solution, 5.5 parts of deionized water, 30 parts of the self-made powder metal flashing paint arrangement agent aqueous solution in the step (1), and 5.50 parts of the deionized water. The preparation steps are as follows: adding the water-based acrylic resin into a container, adding a neutralizer of ammonia water in a dispersion state to adjust the pH value to 7-7.5, and dispersing for 5-10 min. And (3) sequentially adding a siloxane defoaming agent, a wetting agent of an organic silicon surfactant and deionized water, and dispersing for 2-3 min. Adding the self-made powder metal flashing paint arrangement agent aqueous solution 30 obtained in the step (1) and deionized water 5.50. Dispersing the powder metal flashing paint arrangement agent for 5-8 min, and filtering with 300-mesh filter cloth to obtain the powder metal flashing paint arrangement agent.
The prepared water-based metallic flashing paint and the prepared matched blending resin are mixed according to the proportion of 1: the mixture ratio of 1 is stirred evenly and then the spraying can be carried out.
The water-based metallic flashing paint and the matched blended resin paint film have the following properties:
Claims (5)
1. the water-based metallic flashing paint is characterized by comprising water-based metallic flashing paint and matched blending resin; the water-based metallic flashing paint comprises the following raw materials in parts by weight: 3-20 parts of aluminum paste, 3-20 parts of film-forming cosolvent, 0.1-1 part of high-molecular-weight dispersant, 0.1-3 parts of amine neutralizer, 0.5-3 parts of metal flashing paint arrangement agent, 50-80 parts of self-made waterborne polyurethane base material and 5-30 parts of deionized water; the matched blended resin comprises the following raw materials in parts by weight: 30-70 parts of water-based acrylic resin, 0.1-3 parts of amine neutralizer, 0.1-1 part of defoaming agent, 0.1-1 part of wetting agent, 30-60 parts of self-made powder metal flashing paint arrangement agent aqueous solution and 3-20 parts of deionized water; the self-made waterborne polyurethane base material comprises the following raw materials in parts by weight: 50-70 parts of waterborne polyurethane resin, 0.1-1 part of siloxane defoaming agent, 0.1-1 part of organic silicon surfactant wetting agent, 1-10 parts of anti-settling agent and 20-50 parts of deionized water; the self-made powder metal flashing paint arrangement agent aqueous solution comprises the following raw materials in parts by weight: 70-95 parts of deionized water, 1-20 parts of Pico powder metal flashing paint arrangement agent and 2-20 parts of polyhydric alcohol, and 0.1-2 parts of alkyl environment-friendly emulsifier is replaced; adding the matched blended resin during spraying.
2. The aqueous metallic flashing paint of claim 1 in which the high molecular weight dispersant is a polyacrylate copolymer solution.
3. An aqueous metallic flashing paint as claimed in claim 1 in which the amine neutralising agent is ammonia, triethylamine or dimethylethanolamine.
4. The water-based metallic flashing paint as defined in claim 1, wherein the anti-settling agent is a water-based polyamide sodium salt emulsion.
5. An aqueous metallic flashing paint as claimed in claim 1 in which the film-forming co-solvent is ethylene glycol tertiary-butyl ether, polyol ester, isopropyl alcohol for improving its low temperature freeze-thaw stability.
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| CN201811524129.7A CN109852216B (en) | 2018-12-13 | 2018-12-13 | Water-based metal flashing paint |
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| CN201811524129.7A CN109852216B (en) | 2018-12-13 | 2018-12-13 | Water-based metal flashing paint |
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| CN112852271A (en) * | 2019-11-28 | 2021-05-28 | 雅图高新材料有限公司 | Superfine atomized all-weather low-viscosity multipurpose water-based blended water and preparation method thereof |
| CN116904098A (en) * | 2023-08-15 | 2023-10-20 | 株洲市九华新材料涂装实业有限公司 | Water-based metallic flashing base paint and preparation method and application thereof |
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